Interlock joint for glass articles



July 7, 1942.

L. POGLEIN INIE'RLOCK JOINTS FOR GLASS ARTICLES 7 Filed Feb. 1, 1939INVENT OR.

' ATTORNEY.

Patented July 7, 1942 UNITED STATES PATENT OFFICE INTERLOCK JOINT FORGLASS ARTICLES Louis Poglein, Jeannette, Pa., assignor to McKee GlassCompany, Jeannette, Pa., a corporation of Pennsylvania,

1 Claim.

This invention relates to new and useful improvements in refrigeratorware, more particularly to refrigerator ware made of glass by molding,and it is among the objects thereof to produce such ware of twoidentical parts which, when assembled in the manner of their normal use,will interlock at portions of their engaging or abutting surfaces.

The invention will become more apparent in connection with a descriptionof the accompanying drawing in which like reference characters designatelike parts and in which: Fig. 1 is a top plan view of an assembled glassarticle embodying the principles of this invention, and Fig. 2 avertical cross-section taken longitudinally thereof.

I have shown a butter box, so-called, of glass, as an illustrativeembodiment of the invention. The butter box comprises two identicalreceptacles numbered l and l a, respectively, having handle or grippingportions 2 and 2a at the respective ends thereof, the gripping portionshaving flat surfaces 3 constituting abutting faces provided with tongueand groove elements l and 5, respectively.

The primary feature of the invention is the provision of a tongue 4 onthe surface 3 of one of the gripping elements of the receptacle, and agroove 5 on the surface 3 of the other projecting gripping portion ofthe same receptacle, whereby, when the receptacles are assembled inpairs, as shown in Fig. 2 of the drawing, the tongues and grooves of therespective receptacles will interact with the tongues and grooves of thecooperating receptacle, which is in superposed relation therewith, thusforming an interlock which prevents lateral displacement of thereceptacle in handling.

By the novel construction of placing a tongue and groove on each of thereceptacles, I am enabled to produce an article by a single mold whichis similarly provided with a tongue and groove on the opposite matrixportions that form the extending handle or gripping elements, thuseffecting great economy in the cost of equipment necessary to producethe article, the advantage of which will be appreciated by thosefamiliar with cost of mold equipment in glass manufacturing plants.

It is further to be noted in connection with Fig. l of the drawing, thatthe tongues and grooves do not extend across the entire face of thegripping portions 2 and 2a. of the receptacles, so that there can be nolateral displacement of the receptacles when assembled in either alongitudinal or transverse direction. Thus, by means of the simpleinterlocks, capable of being produced by a single mold, refrigeratorWare may be produced in an economical and expedient manner.

Although I have illustrated the invention as embodied in a butter box,it will be evident to those skilled in the art that it may be similarlyapplied to other forms of glass articles having abutting faces forinterlocking them against transverse movement.

I claim:

A household utensil comprising a pair of symmetrically-formed containerseach having a plurality of oppositely disposed lateral projectionsconstituting handles, one projection of each container having a tongueand the other projection a groove, which interact to prevent lateraldisplacement of the assembled containers.

LOUIS POGLEIN.

